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Urban package transformer substations of KTPG (2KTPG) series

Urban package transformer substations of KTPG (2KTPG) series are intended for the reception, transformation, and distribution of three-phase AC electric power of 50 Hz frequency in urban and suburban power supply systems.

Urban package transformer substations of KTPG (2KTPG) series

KTPG (2KTPG) series substations are designed to operate under the following conditions:

  1. temperature range: from -45° С to +40° С;
  2. external insulation: insulation class II;
  3. area rating in terms of glaze and wind velocity: I-IV according to Electrical Installation Code PUE-86.
  4. environment: explosion-proof and fire-proof, containing no current-carrying dust, no reactive gases and vapors (atmosphere of type II).

KTPG (2KTPG) series substations are not meant to operate under jolting and vibration conditions.

The following versions of urban package transformer substations are made:

  1. single-ended single-transformer substation (KTPG); 
  2. double-ended single-transformer substation (KTPG); 
  3. single-ended double-transformer substation (2KTPG); 
  4. double-ended double-transformer substation (2KTPG).

Depending on their version, substations are completed with one or two power transformers. On the high-voltage side of 6(10) kV, urban substations have various combinations of inlet-outlet lines: cable inlet – cable outlet (KK); aerial inlet – aerial outlet (VK). On the low-voltage side of 0.4 kV, only cable inlet-outlet lines.

KTPG (2KTPG) series substations can be fed by both cable and aerial inlet of 6(10) kV.

When using aerial inlet on the HV side, urban package transformer substations are equipped with dischargers and a disconnector of 10 kV. The disconnector should be installed on a free-standing pole. Advanced metering infrastructure (AMI) can be installed at the substation.

Key performance specification of KTPG:  

Parameter name
Value
Substation type
Single-ended / double-ended
Type of inlet from the HV side
Aerial/cable
Type of inlet from the LV side
Cable
Capacity of the power transformer TMG, kVA
63
100
160
250
400
630
Number of transformers
1 / 2
Rated voltage on the HV side, kV
6 / 10
Rated voltage on the LV side, kV
0.4
Incoming-line switching device
Fixed circuit breaker
Drawout circuit breaker
Knife switch
Rated current of the main switch
100
160
250
400
630
1000
Rated current of current transformers, A
100/5
200/5
300/5
400/5
600/5
1000/5
Climatic category
N1
Overall dimensions of KTPG (HxWxD), mm
2670х4300х2500
Overall dimensions of 2KTPG (HxWxD), mm
2670х8600х2500

See more about 10 kV complete transformer substations of KTP series.